Combined friction and jaw clutch.



C. S. HOOK. COMBINED FRICTION AND JAW CLUTCH. APPLICATION FILED 001*.7, 1908.

907,051. Patented Dec. 15,1908

9? 4/ H\ 4N A! ,L'2 F 6"'/I/ :55: P 0' J 4- C 74 i6 0 E WITNESSES. //vv/v TOR C. S. HOOK. avg/ 7 UNITED STATES PATENT OFFICE.

CHARLES STEWART HOOK, OF TORONTO, ONTARIO, CANADA, ASSIGNOR OF ONE-HALF TO THOMAS CHRISTOPHER HOOK.

COMBINED FRICTION AND J'AW CLUTCH.

Specification of Letters Patent.

Application fled October 7, 1908. Serial No. 456,636.

Patented Dec. 15, 1908.

T 0 all whom it may concern:

Be it known that I, CHARLES STEWART HOOK, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in a Combined Friction and Jaw Clutch, of which the following is a specification.

My invention relates to improvements in combined friction and jaw clutches, and the object of the invention is to devise a simple, positive and efiectual clutch of this class in which when the clutch is being applied immediately the friction members are disengaged the 'aw members will be engaged and be assure of being held securely together without the necessity of manual exertion and yet free to be disengaged and likewise when the friction members are disengaged in throwing out the clutch and the jaw members thrown out, such jaw members will be positively and etlectually held from engagement Without manual exertion and yet free to be thrown in again.

My invention consists in that class of a clutch in which a ring or disk is rovided with blocks of wood, which protru e on opposite sides thereof and disks or rings, which enga e these blocks and aws on the ends of the s eeves located within the disks, which are designed to en age.

The c utch is a apted for use either as a shaft coupling or as a pulley clutch. In the drawings I have shown my clutch as a shaft coupling. The pulleys, sleeve and jaws and levers and bolts connecting the levers to the disks are all constructed and operate as hereinafter more particularly explained.

Figure 1, is a sectional view showing my improved combined friction and jaw clutch. Fig. 2, is a cross section on the line r-y Tn the drawings like letters'of reference indicate corres onding parts in each figure.

A is one she and B is the shaft in alinement therewith and to which the shaft A is designed to be coupled. C is a disk having ahub C and an internal peripheral annular jaw C having preferably a ratchet shaped face C. C is a sleeve fitting within the hub C and D is a friction ring, which is externally threaded and fits within a corres ondingly internal thread in the flange- (l he ring D has openings at suitable distances apart to contain a series of Wooden blocks D, such blocks protruding from the opposite face of the ring as indicated.

E is a sleeve, which fits on theshaft B and is (provided with an annular groove E rovi ed with the usual side pins to which .is connected an operating lever E, which is ivoted on a bracket 2 suitably su ported.

he construction of the lever E an its connection to the sleeve E is of the ordinary type and such as is generally used in many forms of friction clutches. The inner end of the sleeve E is provided with an annular jaw E which is designed to oo-act with the annular 'aw C and is provided with ratchet-.

shape teeth E designed to co-act with the ratchet shaped teeth C? of the annular jaw C The sleeve is provided with an inner keyway E next the shaft in which fits a key 3, such key being held in a suitable recess in the shaft B. The keyway E is longer than the key, so as to permit of the longitudinal movement of the sleeve E. The periphery of the sleeve E is provided with a keyway E as indicated.

F is a sleeve; which its on the end ofv the annular jaw C and the annular jaw h of the sleeve E, both annular jaws being preferably of the same diameter. The sleeve F'is rovided with a key G, which fits into the 'eyway E being shorter than the keyway. The key is suitably secured in position within the sleeve F by a set. screw G. The sleeve F is provided wit-h'an annular flange F,-which extends outwardly over the face of the blocks D with which itis designed to engage.

' His a ring, which fits on the sleeve F being rovidedwith an internal shoulder H, which is desi ned to be brought against a shoulder F of the sleeve F in order to limit the sliding movement of the ring H axially. The ring H is designed to contact also with the o 0- site faces of the blocks D to that with w rch the flange F is designed to engage or contact.

I are a series of rods or bolts, which pass through the ring H flange F and second ring J slidable axially on the sleeve F. The rods 1 have heads I, which engage the ring Hand nuts I at the opposite end on the outside of the ring J. Y

K are 5 iral springs encircling the bolts or rods I am extending between the ring H and the flan e F.

L are levers, which are pivotally connected by links L to the flange F and through an orifice L in which the bolts I extend. The levers are formed with recesses L to the outside of the orifices, which fit on the bosses J forming part of the ring J.

. J are links, which are connected by the pins J to the sleeve E, such links at the inner ends fitting in notches in the sleeve E. The

- outer ends of the links J 2 are connected by the pins J to the levers. The bosses J form a fulcrum for the levers. Normally the pins J and J of the links J lie in a cross plane at right angles to the axis of rotation.

My invention is shown as applied to a shaft coupling and when applied to a shaft coupling-I secure the friction disk C to the shaft A by a key 4, which causes the friction disk to rotate with the shaft A. In case,however, I wish to use my clutch in connection with transmission gear or the like the main shaft would extend through the hub C and the pulley or other gear and would be secured on the hub. The hub, of course, would be loose on the shaft. 7

I have shown my clutch with the parts so arranged that the friction disks F and H are in engagement with the blocks D and in short the friction clutch is engaged. The points of the annular ratchet shapedjaws C and E are it will be noticed on reference to the dotted lines of the ratchet jaws close to engagement at this period. By throwing the lever E in the direction indicated by arrow, so as to throw the sleeve E inwardly, it will be seen that the inner ends of the links J 2 will be likewise thrown inwardly, thereby pulling down upon the lever L, thus tilting each link on an imaginary fulcrum located between the link L and the boss J, thereby releasing the pressure on the plate J and at the same time pulling the disk F by the link L away from the blocks D. The spring K now acts to force the disks H and F apart. At the precise period that this movement is given to the disk F the points of the aws have become engaged, the distance of movement of the short end of the lever being just sufficiently long, so that the jaws are engaged before the disks F and H are disengaged with the blocks D. By forcing the lever E still farther so as to brin the inner end of the link J 2 still farther mwardly the jaws are securely locked and the shafts A and B will rotate together. The springs K now forcing the disk F and consequently the lever L outwardly will serve to retain the links J 2 in their innermost position and lock them there, so that only by the lever E operating upon the links J 2 and levers L again can the jaws be unlocked. When they are unlocked the friction disks II and F are necessarily caused to engage again prior to the clutch being entirely thrown out.

y throwing the lever E in the opposite direction to that indicated by arrow the friction disks F and H, which are shown in the drawing as engaging the blocks D as herewhen the'clutch is thrown out.

disks F and H from engagement with the blocks until the lever is moved again in the direction indicated by arrow to throw in the friction clutch and then the aws.

It will thus be seen that the springs K are essentially important to aid in holdingthe jaws engaged when the clutch is thrown in and to hold the friction disks disengaged When the friction disks are thrown in as the shaft B is keyed to the sleeve E and the sleeve E is keyed to the sleeve F carrying the friction disks F and as the disk C is secured by the hub C to the shaft A and the ring D is se cured on to the diskC the friction disks H and F engaging with the blocks D of the ring D the friction disks F and H when thrown in necessarily connect the shafts A and B and when the jaws are thrown in the shafts are directly connected. The shafts A and B are likewise disconnected upon the throwing out of the jaws and the friction disks F and H by the device I have hereinbefore described.

What I claim as my invention is:

' 1. In a combined friction and jaw clutch, the combination with the friction ring and disk to which the same is secured provided with an annular aw surrounding the shaft, of sleeve keyed to the shaft capable of longitudinal movement thereon and provided with an inner annular shaped jaw, and means for moving the sleeve longitudinally, and a sup lemental sleeve keyed to and capable of ongitudinal movement upon the aforesaid sleeve and provided with f'riction disks, one stationary and the other movable axially, bolts passing through the disks, springs located on the bolts between the disks and means for simultaneously throwing the disks apart and the jaws into engagement as and for the purpose specified.

2. In a combined friction and jaw clutch, the combination with the friction ring and disk to which the same is secured provided with an annular jaw surrounding the shaft, of a sleeve keyed to the shaft capable of Iongitudinal movement thereon and provided with an inner annular shaped ratchctj aw, and means for moving the sleeve longitudinally, and a supplemental sleeve keyed to and capable of longitudinal movement upon the aforesaid sleeve and provided with friction disks, one stationary and the other movable axially, bolts passing through the disks, springs located on the bolts between the disks and means carried by and operated from the sleeve for throwing the disks apart and the jaws into engagement as and for the purpose specified.

In a combined friction and jaw clutch,

the combination with the friction ring and disk to which the same is secured provided with an annular jaw surrounding the shaft, of a sleeve keyed to the shaft capable of longitudinal movement thereon and provided with an inner annular sha ed ratchet jaw, and means for moving the sYeeve longitudinally, and a supplemental sleeve keyedv to and capable of longitudinal movement upon the aforesaid sleeve and provided with frlction disks, one stationary and the other movable axially, bolts passing through the disks, springs located on-the bolts between the disks, links pivoted on the sleeve, links pivotally connected to the disk forming part 15 of the outer sleeve and levers connecting the aforesaid sets of links, such levers being pro- CHARLES STEWART HOOK.

Witnesses:

R. COBAIN, L. M. CLEMENT. 

